What’s Vulnerable › Vulnerabilities

CVE-2021-47310: net: ti: fix UAF in tlan_remove_one

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

Affected products

• Linux kernel: from 3.10 before 4.4.277; from 4.5 before 4.9.277; from 4.10 before 4.14.241; from 4.15 before 4.19.199; from 4.20 before 5.4.135; from 5.5 before 5.10.53 — fixed in 4.14.241, 4.19.199, 4.4.277, 4.9.277, 5.10.53, 5.13.5

How to fix

Upgrade to a fixed version: Linux kernel 4.14.241, 4.19.199, 4.4.277, 4.9.277. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0336f8ffece62f882ab3012820965a786a983f70
• https://git.kernel.org/stable/c/0538b0ab7d2c396e385694228c7cdcd2d2c514e9
• https://git.kernel.org/stable/c/93efab0ef2a607fff9166d447c4035f98b5db342
• https://git.kernel.org/stable/c/a0a817b2d308fac090a05cbbe80988e073ac5193
• https://git.kernel.org/stable/c/a18a8d9cfbb112ad72e625372849adc3986fd6bf
• https://git.kernel.org/stable/c/b7e5563f2a7862a9e4796abb9908b092f677e3c1
• https://git.kernel.org/stable/c/c263ae8c7e4c482387de5e6c89e213f8173fe8b6
• https://git.kernel.org/stable/c/f2a062fcfe1d6f1b0a86fa76ae21c277d65f4405
• https://git.kernel.org/stable/c/0336f8ffece62f882ab3012820965a786a983f70
• https://git.kernel.org/stable/c/0538b0ab7d2c396e385694228c7cdcd2d2c514e9
• https://git.kernel.org/stable/c/93efab0ef2a607fff9166d447c4035f98b5db342
• https://git.kernel.org/stable/c/a0a817b2d308fac090a05cbbe80988e073ac5193

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